Function isBase64Image

check of the provided string is a base64 string, by simply observing if it starts with "data:image/"

  • isBase64Image(str?): str is
        | `data:image/gif;base64,${string}`
        | `data:image/jpeg;base64,${string}`
        | `data:image/jpg;base64,${string}`
        | `data:image/png;base64,${string}`
        | `data:image/svg+xml;base64,${string}`
        | `data:image/webp;base64,${string}`

  • Parameters

    • Optionalstr: string

    Returns str is
        | `data:image/gif;base64,${string}`
        | `data:image/jpeg;base64,${string}`
        | `data:image/jpg;base64,${string}`
        | `data:image/png;base64,${string}`
        | `data:image/svg+xml;base64,${string}`
        | `data:image/webp;base64,${string}`

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